Shop › PHASE5 BOLT CARRIER GROUP AR15 BLK PHASE5 BOLT CARRIER GROUP AR15 BLK $150.00 Phase 5 Weapon Systems Bolt Carrier Group, For AR15, Black Phosphate Chrome Lined Finish BCG-AR15 Quantity: Add To Cart Added! Phase 5 Weapon Systems Bolt Carrier Group, For AR15, Black Phosphate Chrome Lined Finish BCG-AR15